All changes to tower
| Date | Change | Source |
|---|---|---|
| 19 Oct 2018 | 1-6: nominal,turning added; 1,2,3,5,6: diam amended; | Chris Pickford via 00013125 |
| 4-6: founder amended; frame: truss,layout added | Chris Pickford via 00013125 | |
| 12 Sep 2010 | 1-6: frame id added; frame info added | John Baldwin via database |